Commit | Line | Data |
---|---|---|
2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
91da11f8 LB |
2 | /* |
3 | * net/dsa/dsa_priv.h - Hardware switch handling | |
e84665c9 | 4 | * Copyright (c) 2008-2009 Marvell Semiconductor |
91da11f8 LB |
5 | */ |
6 | ||
7 | #ifndef __DSA_PRIV_H | |
8 | #define __DSA_PRIV_H | |
9 | ||
412a1526 | 10 | #include <linux/if_bridge.h> |
b6459415 | 11 | #include <linux/if_vlan.h> |
91da11f8 | 12 | #include <linux/phy.h> |
5075314e | 13 | #include <linux/netdevice.h> |
04ff53f9 | 14 | #include <linux/netpoll.h> |
ea5dd34b | 15 | #include <net/dsa.h> |
e131a563 | 16 | #include <net/gro_cells.h> |
5075314e | 17 | |
123abc06 VO |
18 | #define DSA_MAX_NUM_OFFLOADING_BRIDGES BITS_PER_LONG |
19 | ||
52c96f9d | 20 | enum { |
1faabf74 | 21 | DSA_NOTIFIER_AGEING_TIME, |
52c96f9d VD |
22 | DSA_NOTIFIER_BRIDGE_JOIN, |
23 | DSA_NOTIFIER_BRIDGE_LEAVE, | |
685fb6a4 VD |
24 | DSA_NOTIFIER_FDB_ADD, |
25 | DSA_NOTIFIER_FDB_DEL, | |
3dc80afc VO |
26 | DSA_NOTIFIER_HOST_FDB_ADD, |
27 | DSA_NOTIFIER_HOST_FDB_DEL, | |
e212fa7c VO |
28 | DSA_NOTIFIER_LAG_FDB_ADD, |
29 | DSA_NOTIFIER_LAG_FDB_DEL, | |
058102a6 TW |
30 | DSA_NOTIFIER_LAG_CHANGE, |
31 | DSA_NOTIFIER_LAG_JOIN, | |
32 | DSA_NOTIFIER_LAG_LEAVE, | |
8ae5bcdc VD |
33 | DSA_NOTIFIER_MDB_ADD, |
34 | DSA_NOTIFIER_MDB_DEL, | |
b8e997c4 VO |
35 | DSA_NOTIFIER_HOST_MDB_ADD, |
36 | DSA_NOTIFIER_HOST_MDB_DEL, | |
d0c627b8 VD |
37 | DSA_NOTIFIER_VLAN_ADD, |
38 | DSA_NOTIFIER_VLAN_DEL, | |
134ef238 VO |
39 | DSA_NOTIFIER_HOST_VLAN_ADD, |
40 | DSA_NOTIFIER_HOST_VLAN_DEL, | |
bfcb8132 | 41 | DSA_NOTIFIER_MTU, |
53da0eba | 42 | DSA_NOTIFIER_TAG_PROTO, |
dc452a47 | 43 | DSA_NOTIFIER_TAG_PROTO_CONNECT, |
7f297314 | 44 | DSA_NOTIFIER_TAG_PROTO_DISCONNECT, |
c64b9c05 VO |
45 | DSA_NOTIFIER_TAG_8021Q_VLAN_ADD, |
46 | DSA_NOTIFIER_TAG_8021Q_VLAN_DEL, | |
295ab96f | 47 | DSA_NOTIFIER_MASTER_STATE_CHANGE, |
52c96f9d VD |
48 | }; |
49 | ||
1faabf74 VD |
50 | /* DSA_NOTIFIER_AGEING_TIME */ |
51 | struct dsa_notifier_ageing_time_info { | |
1faabf74 | 52 | unsigned int ageing_time; |
1faabf74 VD |
53 | }; |
54 | ||
52c96f9d VD |
55 | /* DSA_NOTIFIER_BRIDGE_* */ |
56 | struct dsa_notifier_bridge_info { | |
726816a1 | 57 | const struct dsa_port *dp; |
d3eed0e5 | 58 | struct dsa_bridge bridge; |
b079922b | 59 | bool tx_fwd_offload; |
06b9cce4 | 60 | struct netlink_ext_ack *extack; |
52c96f9d VD |
61 | }; |
62 | ||
685fb6a4 VD |
63 | /* DSA_NOTIFIER_FDB_* */ |
64 | struct dsa_notifier_fdb_info { | |
726816a1 | 65 | const struct dsa_port *dp; |
2acf4e6a AS |
66 | const unsigned char *addr; |
67 | u16 vid; | |
c2693363 | 68 | struct dsa_db db; |
685fb6a4 VD |
69 | }; |
70 | ||
e212fa7c VO |
71 | /* DSA_NOTIFIER_LAG_FDB_* */ |
72 | struct dsa_notifier_lag_fdb_info { | |
73 | struct dsa_lag *lag; | |
74 | const unsigned char *addr; | |
75 | u16 vid; | |
c2693363 | 76 | struct dsa_db db; |
e212fa7c VO |
77 | }; |
78 | ||
8ae5bcdc VD |
79 | /* DSA_NOTIFIER_MDB_* */ |
80 | struct dsa_notifier_mdb_info { | |
726816a1 | 81 | const struct dsa_port *dp; |
8ae5bcdc | 82 | const struct switchdev_obj_port_mdb *mdb; |
c2693363 | 83 | struct dsa_db db; |
8ae5bcdc VD |
84 | }; |
85 | ||
058102a6 TW |
86 | /* DSA_NOTIFIER_LAG_* */ |
87 | struct dsa_notifier_lag_info { | |
726816a1 | 88 | const struct dsa_port *dp; |
dedd6a00 | 89 | struct dsa_lag lag; |
058102a6 TW |
90 | struct netdev_lag_upper_info *info; |
91 | }; | |
92 | ||
d0c627b8 VD |
93 | /* DSA_NOTIFIER_VLAN_* */ |
94 | struct dsa_notifier_vlan_info { | |
726816a1 | 95 | const struct dsa_port *dp; |
d0c627b8 | 96 | const struct switchdev_obj_port_vlan *vlan; |
31046a5f | 97 | struct netlink_ext_ack *extack; |
d0c627b8 VD |
98 | }; |
99 | ||
bfcb8132 VO |
100 | /* DSA_NOTIFIER_MTU */ |
101 | struct dsa_notifier_mtu_info { | |
726816a1 | 102 | const struct dsa_port *dp; |
bfcb8132 VO |
103 | int mtu; |
104 | }; | |
105 | ||
53da0eba VO |
106 | /* DSA_NOTIFIER_TAG_PROTO_* */ |
107 | struct dsa_notifier_tag_proto_info { | |
108 | const struct dsa_device_ops *tag_ops; | |
109 | }; | |
110 | ||
c64b9c05 VO |
111 | /* DSA_NOTIFIER_TAG_8021Q_VLAN_* */ |
112 | struct dsa_notifier_tag_8021q_vlan_info { | |
726816a1 | 113 | const struct dsa_port *dp; |
c64b9c05 VO |
114 | u16 vid; |
115 | }; | |
116 | ||
295ab96f VO |
117 | /* DSA_NOTIFIER_MASTER_STATE_CHANGE */ |
118 | struct dsa_notifier_master_state_info { | |
119 | const struct net_device *master; | |
120 | bool operational; | |
121 | }; | |
122 | ||
c4bb76a9 | 123 | struct dsa_switchdev_event_work { |
4bed397c | 124 | struct net_device *dev; |
93c79823 | 125 | struct net_device *orig_dev; |
c4bb76a9 VO |
126 | struct work_struct work; |
127 | unsigned long event; | |
128 | /* Specific for SWITCHDEV_FDB_ADD_TO_DEVICE and | |
129 | * SWITCHDEV_FDB_DEL_TO_DEVICE | |
130 | */ | |
131 | unsigned char addr[ETH_ALEN]; | |
132 | u16 vid; | |
3dc80afc | 133 | bool host_addr; |
c4bb76a9 VO |
134 | }; |
135 | ||
5e8a1e03 VO |
136 | enum dsa_standalone_event { |
137 | DSA_UC_ADD, | |
138 | DSA_UC_DEL, | |
139 | DSA_MC_ADD, | |
140 | DSA_MC_DEL, | |
141 | }; | |
142 | ||
143 | struct dsa_standalone_event_work { | |
144 | struct work_struct work; | |
145 | struct net_device *dev; | |
146 | enum dsa_standalone_event event; | |
147 | unsigned char addr[ETH_ALEN]; | |
148 | u16 vid; | |
149 | }; | |
150 | ||
91da11f8 | 151 | struct dsa_slave_priv { |
15240248 | 152 | /* Copy of CPU port xmit for faster access in slave transmit hot path */ |
4ed70ce9 | 153 | struct sk_buff * (*xmit)(struct sk_buff *skb, |
5075314e | 154 | struct net_device *dev); |
e84665c9 | 155 | |
e131a563 AL |
156 | struct gro_cells gcells; |
157 | ||
afdcf151 VD |
158 | /* DSA port data, such as switch, port index, etc. */ |
159 | struct dsa_port *dp; | |
e84665c9 | 160 | |
04ff53f9 FF |
161 | #ifdef CONFIG_NET_POLL_CONTROLLER |
162 | struct netpoll *netpoll; | |
163 | #endif | |
f50f2127 FF |
164 | |
165 | /* TC context */ | |
166 | struct list_head mall_tc_list; | |
91da11f8 LB |
167 | }; |
168 | ||
91da11f8 | 169 | /* dsa.c */ |
c39e2a1d | 170 | const struct dsa_device_ops *dsa_tag_driver_get(int tag_protocol); |
4dad81ee | 171 | void dsa_tag_driver_put(const struct dsa_device_ops *ops); |
53da0eba | 172 | const struct dsa_device_ops *dsa_find_tagger_by_name(const char *buf); |
c39e2a1d | 173 | |
7e580490 VO |
174 | bool dsa_db_equal(const struct dsa_db *a, const struct dsa_db *b); |
175 | ||
c9eb3e0f | 176 | bool dsa_schedule_work(struct work_struct *work); |
98cdb480 | 177 | const char *dsa_tag_protocol_to_str(const struct dsa_device_ops *ops); |
91da11f8 | 178 | |
4e500251 VO |
179 | static inline int dsa_tag_protocol_overhead(const struct dsa_device_ops *ops) |
180 | { | |
181 | return ops->needed_headroom + ops->needed_tailroom; | |
182 | } | |
183 | ||
f2f23566 | 184 | /* master.c */ |
17a22fcf VD |
185 | int dsa_master_setup(struct net_device *dev, struct dsa_port *cpu_dp); |
186 | void dsa_master_teardown(struct net_device *dev); | |
f2f23566 | 187 | |
2231c43b VD |
188 | static inline struct net_device *dsa_master_find_slave(struct net_device *dev, |
189 | int device, int port) | |
3775b1b7 | 190 | { |
2f657a60 VD |
191 | struct dsa_port *cpu_dp = dev->dsa_ptr; |
192 | struct dsa_switch_tree *dst = cpu_dp->dst; | |
7b9a2f4b | 193 | struct dsa_port *dp; |
3775b1b7 | 194 | |
7b9a2f4b VD |
195 | list_for_each_entry(dp, &dst->ports, list) |
196 | if (dp->ds->index == device && dp->index == port && | |
197 | dp->type == DSA_PORT_TYPE_USER) | |
198 | return dp->slave; | |
3775b1b7 | 199 | |
7b9a2f4b | 200 | return NULL; |
3775b1b7 VD |
201 | } |
202 | ||
a40c175b | 203 | /* port.c */ |
53da0eba VO |
204 | void dsa_port_set_tag_protocol(struct dsa_port *cpu_dp, |
205 | const struct dsa_device_ops *tag_ops); | |
39f32101 | 206 | int dsa_port_set_state(struct dsa_port *dp, u8 state, bool do_fast_age); |
7414af30 TW |
207 | int dsa_port_set_mst_state(struct dsa_port *dp, |
208 | const struct switchdev_mst_state *state, | |
209 | struct netlink_ext_ack *extack); | |
8640f8dc | 210 | int dsa_port_enable_rt(struct dsa_port *dp, struct phy_device *phy); |
fb8a6a2b | 211 | int dsa_port_enable(struct dsa_port *dp, struct phy_device *phy); |
8640f8dc | 212 | void dsa_port_disable_rt(struct dsa_port *dp); |
75104db0 | 213 | void dsa_port_disable(struct dsa_port *dp); |
2afc526a VO |
214 | int dsa_port_bridge_join(struct dsa_port *dp, struct net_device *br, |
215 | struct netlink_ext_ack *extack); | |
4e51bf44 | 216 | void dsa_port_pre_bridge_leave(struct dsa_port *dp, struct net_device *br); |
cfbed329 | 217 | void dsa_port_bridge_leave(struct dsa_port *dp, struct net_device *br); |
058102a6 TW |
218 | int dsa_port_lag_change(struct dsa_port *dp, |
219 | struct netdev_lag_lower_state_info *linfo); | |
220 | int dsa_port_lag_join(struct dsa_port *dp, struct net_device *lag_dev, | |
2afc526a VO |
221 | struct netdev_lag_upper_info *uinfo, |
222 | struct netlink_ext_ack *extack); | |
4e51bf44 | 223 | void dsa_port_pre_lag_leave(struct dsa_port *dp, struct net_device *lag_dev); |
058102a6 | 224 | void dsa_port_lag_leave(struct dsa_port *dp, struct net_device *lag_dev); |
89153ed6 VO |
225 | int dsa_port_vlan_filtering(struct dsa_port *dp, bool vlan_filtering, |
226 | struct netlink_ext_ack *extack); | |
54a0ed0d | 227 | bool dsa_port_skip_vlan_configuration(struct dsa_port *dp); |
bae33f2b | 228 | int dsa_port_ageing_time(struct dsa_port *dp, clock_t ageing_clock); |
332afc4c TW |
229 | int dsa_port_mst_enable(struct dsa_port *dp, bool on, |
230 | struct netlink_ext_ack *extack); | |
8e6598a7 TW |
231 | int dsa_port_vlan_msti(struct dsa_port *dp, |
232 | const struct switchdev_vlan_msti *msti); | |
be6ff966 | 233 | int dsa_port_mtu_change(struct dsa_port *dp, int new_mtu); |
2acf4e6a AS |
234 | int dsa_port_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
235 | u16 vid); | |
236 | int dsa_port_fdb_del(struct dsa_port *dp, const unsigned char *addr, | |
237 | u16 vid); | |
5e8a1e03 VO |
238 | int dsa_port_standalone_host_fdb_add(struct dsa_port *dp, |
239 | const unsigned char *addr, u16 vid); | |
240 | int dsa_port_standalone_host_fdb_del(struct dsa_port *dp, | |
241 | const unsigned char *addr, u16 vid); | |
68d6d71e VO |
242 | int dsa_port_bridge_host_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
243 | u16 vid); | |
244 | int dsa_port_bridge_host_fdb_del(struct dsa_port *dp, const unsigned char *addr, | |
245 | u16 vid); | |
e212fa7c VO |
246 | int dsa_port_lag_fdb_add(struct dsa_port *dp, const unsigned char *addr, |
247 | u16 vid); | |
248 | int dsa_port_lag_fdb_del(struct dsa_port *dp, const unsigned char *addr, | |
249 | u16 vid); | |
de40fc5d | 250 | int dsa_port_fdb_dump(struct dsa_port *dp, dsa_fdb_dump_cb_t *cb, void *data); |
bb9f6031 | 251 | int dsa_port_mdb_add(const struct dsa_port *dp, |
ffb68fc5 | 252 | const struct switchdev_obj_port_mdb *mdb); |
bb9f6031 | 253 | int dsa_port_mdb_del(const struct dsa_port *dp, |
3a9afea3 | 254 | const struct switchdev_obj_port_mdb *mdb); |
5e8a1e03 VO |
255 | int dsa_port_standalone_host_mdb_add(const struct dsa_port *dp, |
256 | const struct switchdev_obj_port_mdb *mdb); | |
257 | int dsa_port_standalone_host_mdb_del(const struct dsa_port *dp, | |
258 | const struct switchdev_obj_port_mdb *mdb); | |
68d6d71e VO |
259 | int dsa_port_bridge_host_mdb_add(const struct dsa_port *dp, |
260 | const struct switchdev_obj_port_mdb *mdb); | |
261 | int dsa_port_bridge_host_mdb_del(const struct dsa_port *dp, | |
262 | const struct switchdev_obj_port_mdb *mdb); | |
e18f4c18 | 263 | int dsa_port_pre_bridge_flags(const struct dsa_port *dp, |
a8b659e7 VO |
264 | struct switchdev_brport_flags flags, |
265 | struct netlink_ext_ack *extack); | |
045c45d1 | 266 | int dsa_port_bridge_flags(struct dsa_port *dp, |
a8b659e7 VO |
267 | struct switchdev_brport_flags flags, |
268 | struct netlink_ext_ack *extack); | |
076e7133 | 269 | int dsa_port_vlan_add(struct dsa_port *dp, |
31046a5f VO |
270 | const struct switchdev_obj_port_vlan *vlan, |
271 | struct netlink_ext_ack *extack); | |
076e7133 VD |
272 | int dsa_port_vlan_del(struct dsa_port *dp, |
273 | const struct switchdev_obj_port_vlan *vlan); | |
134ef238 VO |
274 | int dsa_port_host_vlan_add(struct dsa_port *dp, |
275 | const struct switchdev_obj_port_vlan *vlan, | |
276 | struct netlink_ext_ack *extack); | |
277 | int dsa_port_host_vlan_del(struct dsa_port *dp, | |
278 | const struct switchdev_obj_port_vlan *vlan); | |
c595c433 HV |
279 | int dsa_port_mrp_add(const struct dsa_port *dp, |
280 | const struct switchdev_obj_mrp *mrp); | |
281 | int dsa_port_mrp_del(const struct dsa_port *dp, | |
282 | const struct switchdev_obj_mrp *mrp); | |
283 | int dsa_port_mrp_add_ring_role(const struct dsa_port *dp, | |
284 | const struct switchdev_obj_ring_role_mrp *mrp); | |
285 | int dsa_port_mrp_del_ring_role(const struct dsa_port *dp, | |
286 | const struct switchdev_obj_ring_role_mrp *mrp); | |
21bd64bd | 287 | int dsa_port_phylink_create(struct dsa_port *dp); |
33615367 SR |
288 | int dsa_port_link_register_of(struct dsa_port *dp); |
289 | void dsa_port_link_unregister_of(struct dsa_port *dp); | |
18596f50 GM |
290 | int dsa_port_hsr_join(struct dsa_port *dp, struct net_device *hsr); |
291 | void dsa_port_hsr_leave(struct dsa_port *dp, struct net_device *hsr); | |
724395f4 VO |
292 | int dsa_port_tag_8021q_vlan_add(struct dsa_port *dp, u16 vid, bool broadcast); |
293 | void dsa_port_tag_8021q_vlan_del(struct dsa_port *dp, u16 vid, bool broadcast); | |
72c3b0c7 | 294 | void dsa_port_set_host_flood(struct dsa_port *dp, bool uc, bool mc); |
57ab1ca2 | 295 | |
91da11f8 | 296 | /* slave.c */ |
5075314e | 297 | extern const struct dsa_device_ops notag_netdev_ops; |
010e269f VO |
298 | extern struct notifier_block dsa_slave_switchdev_notifier; |
299 | extern struct notifier_block dsa_slave_switchdev_blocking_notifier; | |
300 | ||
91da11f8 | 301 | void dsa_slave_mii_bus_init(struct dsa_switch *ds); |
951259aa | 302 | int dsa_slave_create(struct dsa_port *dp); |
cda5c15b | 303 | void dsa_slave_destroy(struct net_device *slave_dev); |
24462549 FF |
304 | int dsa_slave_suspend(struct net_device *slave_dev); |
305 | int dsa_slave_resume(struct net_device *slave_dev); | |
88e4f0ca VD |
306 | int dsa_slave_register_notifier(void); |
307 | void dsa_slave_unregister_notifier(void); | |
53da0eba VO |
308 | void dsa_slave_setup_tagger(struct net_device *slave); |
309 | int dsa_slave_change_mtu(struct net_device *dev, int new_mtu); | |
06cfb2df VO |
310 | int dsa_slave_manage_vlan_filtering(struct net_device *dev, |
311 | bool vlan_filtering); | |
91da11f8 | 312 | |
d945097b VD |
313 | static inline struct dsa_port *dsa_slave_to_port(const struct net_device *dev) |
314 | { | |
315 | struct dsa_slave_priv *p = netdev_priv(dev); | |
316 | ||
317 | return p->dp; | |
318 | } | |
319 | ||
d0006b00 VD |
320 | static inline struct net_device * |
321 | dsa_slave_to_master(const struct net_device *dev) | |
322 | { | |
323 | struct dsa_port *dp = dsa_slave_to_port(dev); | |
324 | ||
f8b8b1cd | 325 | return dp->cpu_dp->master; |
d0006b00 VD |
326 | } |
327 | ||
412a1526 VO |
328 | /* If under a bridge with vlan_filtering=0, make sure to send pvid-tagged |
329 | * frames as untagged, since the bridge will not untag them. | |
330 | */ | |
331 | static inline struct sk_buff *dsa_untag_bridge_pvid(struct sk_buff *skb) | |
332 | { | |
333 | struct dsa_port *dp = dsa_slave_to_port(skb->dev); | |
36cbf39b | 334 | struct net_device *br = dsa_port_bridge_dev_get(dp); |
412a1526 VO |
335 | struct net_device *dev = skb->dev; |
336 | struct net_device *upper_dev; | |
412a1526 VO |
337 | u16 vid, pvid, proto; |
338 | int err; | |
339 | ||
340 | if (!br || br_vlan_enabled(br)) | |
341 | return skb; | |
342 | ||
343 | err = br_vlan_get_proto(br, &proto); | |
344 | if (err) | |
345 | return skb; | |
346 | ||
347 | /* Move VLAN tag from data to hwaccel */ | |
a348292b | 348 | if (!skb_vlan_tag_present(skb) && skb->protocol == htons(proto)) { |
412a1526 VO |
349 | skb = skb_vlan_untag(skb); |
350 | if (!skb) | |
351 | return NULL; | |
352 | } | |
353 | ||
354 | if (!skb_vlan_tag_present(skb)) | |
355 | return skb; | |
356 | ||
357 | vid = skb_vlan_tag_get_id(skb); | |
358 | ||
359 | /* We already run under an RCU read-side critical section since | |
360 | * we are called from netif_receive_skb_list_internal(). | |
361 | */ | |
362 | err = br_vlan_get_pvid_rcu(dev, &pvid); | |
363 | if (err) | |
364 | return skb; | |
365 | ||
366 | if (vid != pvid) | |
367 | return skb; | |
368 | ||
369 | /* The sad part about attempting to untag from DSA is that we | |
370 | * don't know, unless we check, if the skb will end up in | |
371 | * the bridge's data path - br_allowed_ingress() - or not. | |
372 | * For example, there might be an 8021q upper for the | |
373 | * default_pvid of the bridge, which will steal VLAN-tagged traffic | |
374 | * from the bridge's data path. This is a configuration that DSA | |
375 | * supports because vlan_filtering is 0. In that case, we should | |
376 | * definitely keep the tag, to make sure it keeps working. | |
377 | */ | |
3a68844d FF |
378 | upper_dev = __vlan_find_dev_deep_rcu(br, htons(proto), vid); |
379 | if (upper_dev) | |
380 | return skb; | |
412a1526 VO |
381 | |
382 | __vlan_hwaccel_clear_tag(skb); | |
383 | ||
384 | return skb; | |
385 | } | |
386 | ||
884be12f VO |
387 | /* For switches without hardware support for DSA tagging to be able |
388 | * to support termination through the bridge. | |
389 | */ | |
390 | static inline struct net_device * | |
391 | dsa_find_designated_bridge_port_by_vid(struct net_device *master, u16 vid) | |
392 | { | |
393 | struct dsa_port *cpu_dp = master->dsa_ptr; | |
394 | struct dsa_switch_tree *dst = cpu_dp->dst; | |
395 | struct bridge_vlan_info vinfo; | |
396 | struct net_device *slave; | |
397 | struct dsa_port *dp; | |
398 | int err; | |
399 | ||
400 | list_for_each_entry(dp, &dst->ports, list) { | |
401 | if (dp->type != DSA_PORT_TYPE_USER) | |
402 | continue; | |
403 | ||
d3eed0e5 | 404 | if (!dp->bridge) |
884be12f VO |
405 | continue; |
406 | ||
407 | if (dp->stp_state != BR_STATE_LEARNING && | |
408 | dp->stp_state != BR_STATE_FORWARDING) | |
409 | continue; | |
410 | ||
411 | /* Since the bridge might learn this packet, keep the CPU port | |
412 | * affinity with the port that will be used for the reply on | |
413 | * xmit. | |
414 | */ | |
415 | if (dp->cpu_dp != cpu_dp) | |
416 | continue; | |
417 | ||
418 | slave = dp->slave; | |
419 | ||
420 | err = br_vlan_get_info_rcu(slave, vid, &vinfo); | |
421 | if (err) | |
422 | continue; | |
423 | ||
424 | return slave; | |
425 | } | |
426 | ||
427 | return NULL; | |
428 | } | |
429 | ||
bea79078 VO |
430 | /* If the ingress port offloads the bridge, we mark the frame as autonomously |
431 | * forwarded by hardware, so the software bridge doesn't forward in twice, back | |
432 | * to us, because we already did. However, if we're in fallback mode and we do | |
d3eed0e5 | 433 | * software bridging, we are not offloading it, therefore the dp->bridge |
bea79078 VO |
434 | * pointer is not populated, and flooding needs to be done by software (we are |
435 | * effectively operating in standalone ports mode). | |
436 | */ | |
437 | static inline void dsa_default_offload_fwd_mark(struct sk_buff *skb) | |
438 | { | |
439 | struct dsa_port *dp = dsa_slave_to_port(skb->dev); | |
440 | ||
d3eed0e5 | 441 | skb->offload_fwd_mark = !!(dp->bridge); |
bea79078 VO |
442 | } |
443 | ||
f1dacd7a VO |
444 | /* Helper for removing DSA header tags from packets in the RX path. |
445 | * Must not be called before skb_pull(len). | |
446 | * skb->data | |
447 | * | | |
448 | * v | |
449 | * | | | | | | | | | | | | | | | | | | | | |
450 | * +-----------------------+-----------------------+---------------+-------+ | |
451 | * | Destination MAC | Source MAC | DSA header | EType | | |
452 | * +-----------------------+-----------------------+---------------+-------+ | |
453 | * | | | |
454 | * <----- len -----> <----- len -----> | |
455 | * | | |
456 | * >>>>>>> v | |
457 | * >>>>>>> | | | | | | | | | | | | | | | | |
458 | * >>>>>>> +-----------------------+-----------------------+-------+ | |
459 | * >>>>>>> | Destination MAC | Source MAC | EType | | |
460 | * +-----------------------+-----------------------+-------+ | |
461 | * ^ | |
462 | * | | |
463 | * skb->data | |
464 | */ | |
465 | static inline void dsa_strip_etype_header(struct sk_buff *skb, int len) | |
466 | { | |
467 | memmove(skb->data - ETH_HLEN, skb->data - ETH_HLEN - len, 2 * ETH_ALEN); | |
468 | } | |
469 | ||
6bef794d VO |
470 | /* Helper for creating space for DSA header tags in TX path packets. |
471 | * Must not be called before skb_push(len). | |
472 | * | |
473 | * Before: | |
474 | * | |
475 | * <<<<<<< | | | | | | | | | | | | | | | | |
476 | * ^ <<<<<<< +-----------------------+-----------------------+-------+ | |
477 | * | <<<<<<< | Destination MAC | Source MAC | EType | | |
478 | * | +-----------------------+-----------------------+-------+ | |
479 | * <----- len -----> | |
480 | * | | |
481 | * | | |
482 | * skb->data | |
483 | * | |
484 | * After: | |
485 | * | |
486 | * | | | | | | | | | | | | | | | | | | | | |
487 | * +-----------------------+-----------------------+---------------+-------+ | |
488 | * | Destination MAC | Source MAC | DSA header | EType | | |
489 | * +-----------------------+-----------------------+---------------+-------+ | |
490 | * ^ | | | |
491 | * | <----- len -----> | |
492 | * skb->data | |
493 | */ | |
494 | static inline void dsa_alloc_etype_header(struct sk_buff *skb, int len) | |
495 | { | |
496 | memmove(skb->data, skb->data + len, 2 * ETH_ALEN); | |
497 | } | |
498 | ||
5d928ff4 VO |
499 | /* On RX, eth_type_trans() on the DSA master pulls ETH_HLEN bytes starting from |
500 | * skb_mac_header(skb), which leaves skb->data pointing at the first byte after | |
501 | * what the DSA master perceives as the EtherType (the beginning of the L3 | |
502 | * protocol). Since DSA EtherType header taggers treat the EtherType as part of | |
503 | * the DSA tag itself, and the EtherType is 2 bytes in length, the DSA header | |
504 | * is located 2 bytes behind skb->data. Note that EtherType in this context | |
505 | * means the first 2 bytes of the DSA header, not the encapsulated EtherType | |
506 | * that will become visible after the DSA header is stripped. | |
507 | */ | |
508 | static inline void *dsa_etype_header_pos_rx(struct sk_buff *skb) | |
509 | { | |
510 | return skb->data - 2; | |
511 | } | |
512 | ||
a72808b6 VO |
513 | /* On TX, skb->data points to skb_mac_header(skb), which means that EtherType |
514 | * header taggers start exactly where the EtherType is (the EtherType is | |
515 | * treated as part of the DSA header). | |
516 | */ | |
517 | static inline void *dsa_etype_header_pos_tx(struct sk_buff *skb) | |
518 | { | |
519 | return skb->data + 2 * ETH_ALEN; | |
520 | } | |
521 | ||
f515f192 VD |
522 | /* switch.c */ |
523 | int dsa_switch_register_notifier(struct dsa_switch *ds); | |
524 | void dsa_switch_unregister_notifier(struct dsa_switch *ds); | |
bff33f7e | 525 | |
5e8a1e03 VO |
526 | static inline bool dsa_switch_supports_uc_filtering(struct dsa_switch *ds) |
527 | { | |
528 | return ds->ops->port_fdb_add && ds->ops->port_fdb_del && | |
529 | ds->fdb_isolation && !ds->vlan_filtering_is_global && | |
530 | !ds->needs_standalone_vlan_filtering; | |
531 | } | |
532 | ||
533 | static inline bool dsa_switch_supports_mc_filtering(struct dsa_switch *ds) | |
534 | { | |
535 | return ds->ops->port_mdb_add && ds->ops->port_mdb_del && | |
536 | ds->fdb_isolation && !ds->vlan_filtering_is_global && | |
537 | !ds->needs_standalone_vlan_filtering; | |
538 | } | |
539 | ||
bff33f7e | 540 | /* dsa2.c */ |
dedd6a00 VO |
541 | void dsa_lag_map(struct dsa_switch_tree *dst, struct dsa_lag *lag); |
542 | void dsa_lag_unmap(struct dsa_switch_tree *dst, struct dsa_lag *lag); | |
543 | struct dsa_lag *dsa_tree_lag_find(struct dsa_switch_tree *dst, | |
544 | const struct net_device *lag_dev); | |
886f8e26 VO |
545 | int dsa_tree_notify(struct dsa_switch_tree *dst, unsigned long e, void *v); |
546 | int dsa_broadcast(unsigned long e, void *v); | |
53da0eba VO |
547 | int dsa_tree_change_tag_proto(struct dsa_switch_tree *dst, |
548 | struct net_device *master, | |
549 | const struct dsa_device_ops *tag_ops, | |
550 | const struct dsa_device_ops *old_tag_ops); | |
295ab96f VO |
551 | void dsa_tree_master_admin_state_change(struct dsa_switch_tree *dst, |
552 | struct net_device *master, | |
553 | bool up); | |
554 | void dsa_tree_master_oper_state_change(struct dsa_switch_tree *dst, | |
555 | struct net_device *master, | |
556 | bool up); | |
3f9bb030 VO |
557 | unsigned int dsa_bridge_num_get(const struct net_device *bridge_dev, int max); |
558 | void dsa_bridge_num_put(const struct net_device *bridge_dev, | |
559 | unsigned int bridge_num); | |
d3eed0e5 VO |
560 | struct dsa_bridge *dsa_tree_bridge_find(struct dsa_switch_tree *dst, |
561 | const struct net_device *br); | |
058102a6 | 562 | |
e19cc13c | 563 | /* tag_8021q.c */ |
c64b9c05 VO |
564 | int dsa_switch_tag_8021q_vlan_add(struct dsa_switch *ds, |
565 | struct dsa_notifier_tag_8021q_vlan_info *info); | |
566 | int dsa_switch_tag_8021q_vlan_del(struct dsa_switch *ds, | |
567 | struct dsa_notifier_tag_8021q_vlan_info *info); | |
e19cc13c | 568 | |
bff33f7e VO |
569 | extern struct list_head dsa_tree_list; |
570 | ||
91da11f8 | 571 | #endif |